Drag-line bucket



March 10, 1931. A. R. sli-TIG DRAG LINE BUCKET Filed Feb. 1, 1929 2 Sheets-Sheet 1 c nunuunn 1 l rll-llllllzllllllllll March 10, 1931. A, R, SlT-rl@ 1,795,803

DRAG LINE BUCKET yFiled Feb. l, 1929 2 Sheets-Sheet 2 Patented Mar. 10, 191'31 UNITED STATES PATENT OFFICE ARTHUR. R. SIT'IIC, 0F CHICAGO, ILLINOIS,

AssIGNon 'ro AMERICAN MANGANESE STEEL COMPANY, OF CHICAGO HEIGHTS, ILLINOIS, A CORPORATION OF MAINE DRAG-LINE BUCKET Application mea February 1, 1929. serial No. 336,784.

A This invention relates to drag line buckets for excavating purposes which are so constructed that when dragged in contact with material to be excavated the bowl of the bucket will become filled and the bucket may be lifted, conveyed away to a point of discharge and its position accurately controlled to prevent waste of the contained material while it is in transit.

Drag line buckets are commonly constructed from manganese steel castings and comprise a bottom having upstanding sides forming confining walls on three sides leaving an open forward end. The upstanding sides are provided with forward extensions extending beyond the .open forward end and a yoke member is provided which is secured to the forward extensions and forms attachment means for Acontrolling connections. The upgg standingsides are further designed or provided with attachment brackets so that additional connections may be secured to properly control the bucket in use. Because o the lar e size of the buckets ithas been d'iiiicult to xglesign parts which will have the minimum amoun'of metal and at the same time allow proper casting and heat treatment-and give the necessary great strength required in It is a purpose of my invention to provide a drag line bucket construction in w lich an integral manganese steel casting forms the bottom and the three enclosing sides together with the forward extensions and to construct the yoke or arch portion which is secured to the forward extensions in two parts which may be readily cast.

It is furtheran object of my invention to so design the abutting yportions of the iyoke members and the forward extensions o the bowl casting thatrivets may be attached extending in diierent directions, stresses u on the yoke are notl subjected upon rivets al1 m thesame direction.

Another object of my invention resides in an improved construction of the yoke formed in two arts whereby their ends meet at the center -ne of the bucket and are suitably recessed to. form an attachment socket por- 60 tion for a controlling coupling connection.

f bottom 2 of the forms a lip 14, for a purpose thus then;

Additional objects and advantages of my construction will `be more readily apparent y as the description proceeds in connection with the attached .drawings in which-4- Figure 1v is a sectional elevation of my '1mprovedA drag line bucket taken adj acent to the center of Figure 2. i

Figure 2 is an elevation of the frontend of the drag line bucket, partly in section.

Figure 3 1s a top plan view of a portion of the front end of the bucketand principally shows the means for securing the portions of the yoke.

The bowl 1 of my drag line bucket is formed from an integral .manganese vsteel castlng and comprises a bottom 2, upstanding sides 3 and 4 and an enclosing rear end 5. Suitable webbing 6 is Yprovided extending along the side 5 and bottom 2 of the bowl 1 in order to strengthen the construction and to form ground-engaging portions as the bucket is dragged along the ground. To the bucket is secured a digging lip 7 which may be riveted to the upstanding sides 3 and 4 by rivets 8. Digging teeth 9, shown in Figure 2, may be secured to the digging lip inthe usual manner. The upper edges of the bowl 1 are formed with an inwardly extending flange or iin 1() which strengthens the side and rear walls against torsional. strains. The upstanding sides 3 and 4 are provided with forward extensionsv 11 and 12 which extend past the open end of thebowl 1 in line with the upper edge of the side walls 3 and 4. Strengthening ribs 13 extend outwardly from the lside 3 and the forward extension 11 and similarly from the side 4 and the forward extension 12. One of these ribs13 on each side is extended and later to be described.

The yoke member is formedI in two por-4 tions 15 and 16, eachbeing similar inshape exce t 'that one is designed for the 'right han side of the bucket and the other for thc left hand side of the bucket. The yoke portions 15 and 16 are formed with a channellike section, shown in Fi re 1, having suitable cross ribbing 17. he ends 18 of the yoke portions 15 and 16 meet in abutting relation, as shown in Figure 2, at the center line of the bucket and cross webbing 17 is provided near their ends but slightly spaced therefrom so as to leave a recess 19. A suitstresses in the same direction. In addition,`

able coupling connection plate may be inserted in the slot 19 and held by bolts 2O which extend through the webbing 17, as shown in Figure 2, in order to hold the abutting ends 18 of the yoke portions 15 and 16 in place. The lower ends of the yoke portions 15 and 16 are designed with a transverse web 21 which abuts against the lip 14, previously described. The inner end of the lip 14 is slightly recessed, as shown at 22 in Figure 2, in order to receive a projection 23 formed on the ends of the yoke portions 15 and 16.

The construction of the ends of the yoke portions 15 and 16 permit their attachment to the forward extensions 11 and 12 of the bowl 1 by means of rivets 24, shown in Figures 1 and 2, passing through the inner wall 25 of the ends of the yoke members 15 and 16 and the forward extensions 11 and 12. In addition rivets 26 are secured through the lip 14 and the iiangeor web 21, thus it is apparent that the yoke members are rigidly held to the bowl 1 and will withstand the heavy stresses encountered in use.

It should be noted that the sets of rivets 24 and 26 extend in directions normal to each other and therefore are not all subjected to tbe projection 23 co-operating with the recess 22 assists in preventing all the stresses from falling on the rivets 24 and 26.

Just beneath the lip 14 and on the outside of the walls 3 and 4 is secured a hitch plate 27 to which other controlling drag line connections may be attached. The hitch plate is riveted-to the forward extensions by rivets 28. It is obvious that instead of providling a separately attached hitch plate, the connections may be integrally formed on the forward extensions 11 and 12. The inner end of the hitch plate 27 abuts against the ribs 13, as is apparent in Figure 1. f v' A trunnion bearing 29 for the hanging rail connection is shown in dotted lines in Figure 1 secured to the outside of the wall 3. Any common form of attachment may be used.

My design of bucket permits easy casting and heat treatment of the articles and allows a very eicient andstrong connection to be made between the parts. v

It is obvious that many modifications may be resorted to without departing from the spirit of my invention as expressed in the appended claims.

I claim:

1. A drag line bucket construction comprising a bowl consisting of an integral casting forming a bottom, confining walls upstanding. from the sides and rear end of the bottom, and extensionsextending forwardly from the sides; a yoke -separately cast in -two parts, means for securing the parts of the yoke to the forward extensions and means for holding together the parts of the yoke, the adjoining ends of the parts of the yoke having recesses forming an attachmentsocket for a coupling plate, the means for holding the yoke together extending through said socket.

2. A drag line bucket construction comprising a bowl consisting of an integral casting forming a bottom,.confining walls upstanding from the sides and rear end of the bottom, and extensions extending forwardly from the sides; a yoke separately cast in two portions, their abutting 'ends meeting at the center line of the bucket, means for securing each portion of the yoke to a forward extension by sets of rivets extending in different directions.

3. A drag line bucket construction comprising a bowl consisting of an integral casting forming a bottom, confining walls upstanding from the sides and rear end of the bottom, and extensions extending forwardly from the sides; a yoke separately cast in two portions, their abutting ends meeting at the center line of the bucket, means for securing each portion of the yoke to a forward extension by sets of rivets extending in directions normal to each other.

4. A drag line bucket construction comprising a bowl consisting of an integral casting forming a bottom, confining walls upstanding from the sides and rear end of the bottom, and extensions extending forwardly from the sides; a lip integrally formed with each forward extension, a yoke separately cast in two portions, their abutting ends meeting at the center line of the bucket, the lower ends of the yoke portions abutting against said lips',- means for securing the yoke portions to the bowl casting by rivets extending through the yoke portions and the forward extensions and rivets extending through the ends of theyoke portions andsaid lips.

5. A drag line bucket construction comprising a bowl consisting of an integral casting forming a bottom, confining walls upstanding from the sides and rear end of the bottom.

and extensions extending forwardly from theformed with each forsides; a lip integrall li'aving a recess along its a yoke having its lower attaching operating with said lip and a projection extending into said recess, means for securing the yoke to the bowlcasting comprising rivets extending at different angles through said lips and,abutment portions of the yoke. I 7. A drag line bucket construction comprising a bowl consisting of an integral casting forming a bottom, confining walls upstanding 'from the sides andv rear end of the bottom,

l0 and extensions extending forwardly from the sides; a lip integrall formed with each forward'extension and avin a recess alongits inner edge, a yoke having its lower attaching ends formed with an abutment portion cooperating with said lip and a projection extending 1nto said recess, means for securing the yoke to the bowl casting comprising rivets extending through said lips and abutment portions of the yoke, and means for additionally securing said yoke to the bowl casting comprisi rivets extending normal to said first mentloned rivets through said. yoke and said forward extensions. v

8. Av drag line bucket construction, come 26 prising a bowl consisting of a bottom, conlining walls upstanding from the sides and rear end of the bottom, extensions extending forwardly from the sides, each of said extensions having two attachment faces extending S0 at an angle to each other, a yoke, and means A for securing each end portion of the yoke to a forward extension by sets-of rivets extending through each face and in different directions. 9. A drag line bucket construction, comprising abowl consisting of a bottom, confining walls upstanding from the sides and rear end of the bottom, extensions extending forwardly .from the sides, a lip extending from -each forward extension and having a 40 recess along its inner edge, a yoke having its lower attaching ends each formed with an abutment portion cooperating with said lip, and a projection extending into said'recess.

10. A drag line bucket construction, comprising a bowl having extensions extending forwardly from the si es, a lip integrally formed with each for rd extension, a yoke having its lower attaching endseach fo with an abutment portion Acooperating with said lip, means for secu 'ng the yoke to the v bowl comprising rivets extendin through said lips and abutment rtions o the yoke, and means for additions 1y securing said yoke tothe bowlcomprisingrivets extending no1? 5l mal to said first-mentioned rivets through said yoke and said fgrward extensions.

Signed at Chicago, Illinois, this 16th day of January, 1929. ARTHUR R. SITTIG. 

